With the Anthony Joshua vs Eric Molina heavyweight showdown taking place at the Manchester Arena on Saturday, there couldn't be a better time to swot up on the history of the division in The Definitive History of World Championship Boxing.This is the fourth volume of a unique series of books from boxing historian Barry J. Hugman who has spent around 30 years on this mammoth project detailing every world championship bout from the 1870s to October 2016 in a little over 1.25 million words!The series is exclusively launched via http://tiny.cc/3nfehy where the four volumes are priced at £24.99 each and can be delivered in time for your Christmas reading.